LCOV - code coverage report
Current view: top level - module/scheduler/gscheduler - gscheduler.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 0 31 0.0 %
Date: 2024-07-13 16:24:34 Functions: 0 4 0.0 %

          Line data    Source code
       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2021 Intel Corporation.
       3             :  *   All rights reserved.
       4             :  */
       5             : 
       6             : #include "spdk/stdinc.h"
       7             : #include "spdk/likely.h"
       8             : 
       9             : #include "spdk_internal/event.h"
      10             : #include "spdk/thread.h"
      11             : 
      12             : #include "spdk/log.h"
      13             : #include "spdk/env.h"
      14             : #include "spdk/scheduler.h"
      15             : 
      16             : static int
      17           0 : init(void)
      18             : {
      19           0 :         return spdk_governor_set("dpdk_governor");
      20             : }
      21             : 
      22             : static void
      23           0 : deinit(void)
      24             : {
      25           0 :         spdk_governor_set(NULL);
      26           0 : }
      27             : 
      28             : static void
      29           0 : balance(struct spdk_scheduler_core_info *cores, uint32_t core_count)
      30             : {
      31             :         struct spdk_governor *governor;
      32             :         struct spdk_scheduler_core_info *core;
      33           0 :         struct spdk_governor_capabilities capabilities;
      34             :         uint32_t i;
      35             :         int rc;
      36             : 
      37           0 :         governor = spdk_governor_get();
      38           0 :         assert(governor != NULL);
      39             : 
      40             :         /* Gather active/idle statistics */
      41           0 :         SPDK_ENV_FOREACH_CORE(i) {
      42           0 :                 core = &cores[i];
      43             : 
      44           0 :                 rc = governor->get_core_capabilities(core->lcore, &capabilities);
      45           0 :                 if (rc < 0) {
      46           0 :                         SPDK_ERRLOG("failed to get capabilities for core: %u\n", core->lcore);
      47           0 :                         return;
      48             :                 }
      49             : 
      50           0 :                 if (core->current_busy_tsc < (core->current_idle_tsc / 1000)) {
      51           0 :                         rc = governor->set_core_freq_min(core->lcore);
      52           0 :                         if (rc < 0) {
      53           0 :                                 SPDK_ERRLOG("setting to minimal frequency for core %u failed\n", core->lcore);
      54             :                         }
      55           0 :                 } else if (core->current_idle_tsc > core->current_busy_tsc) {
      56           0 :                         rc = governor->core_freq_down(core->lcore);
      57           0 :                         if (rc < 0) {
      58           0 :                                 SPDK_ERRLOG("lowering frequency for core %u failed\n", core->lcore);
      59             :                         }
      60           0 :                 } else if (core->current_idle_tsc < (core->current_busy_tsc / 1000)) {
      61           0 :                         rc = governor->set_core_freq_max(core->lcore);
      62           0 :                         if (rc < 0) {
      63           0 :                                 SPDK_ERRLOG("setting to maximal frequency for core %u failed\n", core->lcore);
      64             :                         }
      65             :                 } else {
      66           0 :                         rc = governor->core_freq_up(core->lcore);
      67           0 :                         if (rc < 0) {
      68           0 :                                 SPDK_ERRLOG("increasing frequency for core %u failed\n", core->lcore);
      69             :                         }
      70             :                 }
      71             :         }
      72             : }
      73             : 
      74             : static struct spdk_scheduler gscheduler = {
      75             :         .name = "gscheduler",
      76             :         .init = init,
      77             :         .deinit = deinit,
      78             :         .balance = balance,
      79             : };
      80             : 
      81           0 : SPDK_SCHEDULER_REGISTER(gscheduler);

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